Typewriting machine



' G. G. GOING TYPEWRITING, MACHINE Filed Jan. 20, 1930 vI N VE NTO R Jv$1 BYWJA/Q'fim ATTORNEY mm wm WITNESSES fiTA TES GMRGE G. WING, QFGLENBROOK, CONNECTICUT, ASSIIGIN'QE TQ REMINGTON TYPE WRITE COEEZPAIW,0F ILION, NEW YORK, A CQRPQM'EION OF NEW YQR'E.

TYPEWRITING application filed January 2Q, 1939. l fe. EEPBBW,

My invention relates to typewriting and like machines and moreparticularly to the type actions thereof.

The main oloj ect of my invention, generall stated, is to provideextremely simple and er fective means for controlling the movementswhich may he employed in standard typewriting machines withoutmaterially moditying the existing structural features thereof.

To the aloove and other ends which will hereinafter appear my inventionconsists in the features of construction, arrangements of parts andcombination of devices set forth in the following description andparticularly pointed out in the appended claims.

in the accompanying drawings wherein like reference characters indicatecorresponding parts in the difierent views- Fig. l is a fragmentary,detail, central, vertical, fore and aft, skeletonized sectional View ofa machine embodying my invention, only so much of the machine beingshown as is necessary to illustrate my invention in its embodimenttherein.

Fig. 2 is a detail, fragmentary front view of some of the parts.

Fig. 3 is an enlarged, detail, fragmentary, vertical sectional viewtaken through the pivotal axis of the momentum accumulator.

Fig. 4 shows in perspective and detached, the type loar center guide andthe parts carried thereby.

The present invention is in the nature of an improvement on theconstruction disclosed in lly Patent No. 1,615,694, dated Jan. 25, 192 iThe type actions re presented are conven tional ones, except for slightmodifications oil each type her, as will presently appear.

As shown each key lever l is pivoted at 2 and provided with a finger key3. There is,

or may he, the usual full complement of fortytwo key levers, eachcontrolling a separate type lea-r, Thus, each key lever is connected at4. to one arm ofa sub-lever 5 mounted to turn on a fixed pivot wire 6carried by a slotted supporting her 7. The upright arm of each sub-levercarries a pin 8 that works in a cam slot 9 in the heel of the associatedtype bar 10, said. arms being progressively longer as the sides of thesystem of type hers are approached.

The segmentally arranged typo hare are pivoted on a pivot wire llcarried by a slotted type har segment 12, each type har worhing'in aseparate radially disposed slot 313 in the segment and carrying twotypes it) and it). The free ends of the t pe hare are normally supportedon a padde type har rest or support 14:. The type bars are bentlaterally their type-carrying ends at 15, the anglularity of the bentportions relatively to t e bars increasing as the sides of the systemare approached, as usually provided in order that each type block 10 maybe, disposed in the same tore and aft vertical plane -when in-theprinting position, and as indicated in dotted lines in Fig. 2,

From Fig. 2 it will be seen that, as isusu'al in such constructions, theplanes of movement of all of the type hars, intermediate their pivotsand the hepds therein, converge below the printing line, saidpoint ofcon vergence corresponding to the line 15 of the bend in each type barwhen in printing position.

lnthe present instance li provide the usual type bar center guide,indicated as a whole. hy the reference numeral 16 and which is se curedby screws 16* to the type bar segment. This type guide has guiding jaws17' with air till

which a contact portion 18 on each typeba r coacts to direct the bar toprinting position in the usual manner. I

I provide a single controlling memher or momentum accumulator, indicatedas a whole hy the reference numeral 19 and shown detached in i e. 4%..This member is located in front or t e platen 2G helow the printing lineand e, .de in the path of and is actinated by controls each type her asit approaches the printing-position; to sheet a slowing down oi. theactuated bar and dial of said member 19 on the bar to efiect su'antially anoiseless pressure imprint. I prefer to pivot the member 19belowthe printing line on the type bar center guide and to so construct,arrange and mount said member 19 that it will not obstruct the operatorsview of the exert the stored ener printing line or the writin As shownmore clearly in Fig; 4 the momentum accumulator or controlling member 19comprises, in,,the present instance, two parallel side armsor members 21shaped alike and fixedly united and maintained spaced apart byconnecting rods 22 and 23. The distance that these members 21- arespaced apart corresponds substantially to the width of the uprightsupporting arm of the type bar center guide 16, so that a member 21 maybe located on each side of the center guide and swing relativelythereto. Each of the members 21 is pierced intermediate its ends at 24to receive a pivot for pivotal support on around the sleeve 27 and isanchored at one end in an opening 32 in the head 28 of said sleeve. Theother end of the spring is secured in a hole 33 in one of the members21. The force of the li ht spring'31- is exerted to return thecontrcfilin member 19 to normal position and is su cient only. to attainthis result, and without materially affecting the actuating movement ofsaid member in conjunction with a type bar. The parts 27-28 and 29 notonly constitute means 'coacting with one of the members 21 for pivotallymounting the controlling member 19, butalso constitute adjustable meanswhereby the efiective force of the spring 31 on said member may bevaried. Thus, by backing up the screw 29 clampin pressure on the sleeve27 is releasedan'd said sleeve with the aid of its head 28 may be turnedin one direction or the other to increase or decrease the effectiveforce of the springfi31, as may be desired.

withwhich each type bar coacts in itsiap= proach to the printingposition to set the momentum accumulator 19 in motion. When the member19 is in the normal dotted-line position shown in F i 1, the contact 22is maintained in the pat of'a cam slot 35 in each type bar of a widthcorresponding substantially to the diameter of the contact. As a typebar reaches the dotted-line position in Fig. 1, the contact 22 willfirst coact with the bottom wall 36 of the cam slot and the continuedmotion of the bar will cause the member 19 to be turned by a camminaction thereon to the full line position. en the contact 22 enters thecam slot in a type bar there is established an interlocking connectionbetween the controlling member and type bar. The efiect therefore, whena type bar reaches the controlling member is that said type bar isslowed down in the act of picking up and actuating said member. Due tothe interlocking connection between the two the stored energy in thecontrollin member or momentum accumulator will be exerted on theconnected typebar' at the last partof its printing stroke and asubstantially noiseless pressure imprint will be effected. .It will beseen that this pressure by the member 19 is exerted on each type barbetween the bend ,15 therein andthe outer free end of the bar and nearthe types thereon in the direction of the axis of the platen, and

where pressure on a pivoted type bar is most efiicaciously applied.,This is especially true when bent type bars are employed, since toapply pressure intermediate the bend in each type bar and its pivottends to efiect a crank ing or off-set force on the bar and throw thetype off their feet when such pressure is applied after the type barreaches the platen. The present construction overcomes this difficultyand applies pressure from the member 19 near the type-carrying end ofthe type bar where such pressure is most efiective, without,nevertheless, interfering with the operators line of vision of theprinting line.

The movement of each type bar under control of its key is unrestraineduntil it reaches the dotted-line Fig. 1 position when it picks up themember 19 and after it has acquired its highest speed. Therefore noresistance due to the operation of the member 19 is felt by theoperatoron the fin er key, since ordinarily, the-finger key will havebeen released by the operator by the time the type bar reaches thedotted-line position.

In order that the member 19 may normall be held in position where itscontact 22 wi i enter the cam slot 35 on any actuated ty bar, ll haverovided means itor arresting t e member 19 in its return to normalposition. Any suitable means may be employed for this purpose. Inthepresent instance ii rovide a stop bar 37 secured to and exten ingbeyond the sides of the type bar center uide 13 in the path of returnmovement a? the asoassa member 19, and where the edges 38 thereof willcoact with the projecting ends'of the bar 37 to efi'ect an arrest of themember 19 under the reaction of its spring 31,

In order to reduce or prevent any appreciable noise by the member 19being arrestedin its return movement by its stop 37 1 pro: vide suitablesound deadening features. Such features in the present instance comprisea very light leaf spring 39 secured at its center to the type bar guide16 between the latter and the stop bar 37. The free ends of this springextend in front of and normally project Iorward from and out of contactwith the projecting ends of the stop bar 37, llfhe free end portions ofthis s ring project into the path of the edges 38 o the member 1%), andas the latter returns to normal position will compress the sprin againstthe stop bar 37 and arrest the mem er 19 with little or no noise. Itshould be understood that the thickness of the spring 39 is exaggeratedin the drawings and that in practice is very light and is insufficientto overcome the slice tive force of the spring 31, which also is a verylight spring,

From the foregoing description it will be understood that l haveprovided simple and efiective means, which may be readily employed instandard typewritinw machines without materially changing t e existingstructural features thereof, for slowing down the movement of each typebar as it ap-- proaches the printing point and cheating susstantially anoiseless pressure imprint.

Various changes may be made in the con struction, and parts thereof maybe employed without others, without departing from my invention as it isdefined in the accompanyin claims,

l fhat 1 claim as new and desire to secure by Letters Patent is 2 i. Thecombination of a platen, a series or pivoted type bars, kc controlledmeans for actuating each type er, and means for slowing down themovement of each type bar as it a proaches the printing point andeffecting su' stantially a noiseless pressure imprint, sald meanscomprising a single momentum accumulator arranged below the printingpoint and in the path of the type-carrying end portion of each type barto be actuated thereby, and means by which the energy of the momentumaccumulator thus actuated is exerted on the actuated type bar at thelast part of its printing movement to efiect substantially a noiselesspressure imprint against the platen-or the paper thereon,

2. The combination oi a platen, a series of pivoted type bars, keycontrolled means for actuating each type bar, and means for slowing downthe movement of each type bar as it approaches the printing point andefilecting substantially noiseless pressure imprint,

said means comprising a single momentum ac cumulator arranged below theprinting point and in the path ofthe type-carrying end portion of eachtype bar to be actuated thereby, and means by which an interlockingconnection between each type bar and said momentum accumulator isautomatically eiiccted so that the energy of the latter is exerted onthe actuated thereby, and means-by which the energy of the momentumaccumulator thus actuated is exerted on the actuated type bar at thelast part of its printing movement to effect substantially a noiselesspressure imprint against the platen or the paper thereon, said lastmentioned means comprising a pin and slot connection between eachactuated type bar and the momentum accumulator brought into efl'ectiveengagement as such type bar approaches the printing position,

i. The combination of a platen, a series of pivoted type bars, keycontrolled" means for actuating each type bar, and means for slowingdown the movementof each type bar as it approaches the printing pointand efiecting substantially a noiseless pressure imprint, said meanscomprising a single momentum. accumulator arranged inv the path of eachtype bar to be actuated thereby, an engaging portion carried by saidmomentum accumulator, and each type bar having a slot in which proachesthe printing point and effecting substantially a noiseless pressureimprint, said means comprising a single momentum accumulator arranged inthe path of each type bar to be actuated thereby, and an engaging pincarried by said momentum accumulator and which is received in said camslot in an actuated type bar as" the latter approaches vwing position,whereby said momentum accumulator may be gradually set in motion by atype bar and an interlocking connection between the actuated ty e barand the momentum accumulator is e ected and 'momentum accumulator andwith which the said cam on each type bar coacts as the latter approachesthe prmting position, whereby the momentum accumulator may be actuatedby a type bar with a camming action.

7 e combination of a platen, a series of pivoted typebars, keycontrolled meansfor actuating each type bar, and means for 'slow ingdown the movement of each type bar as it approaches the printing pointand efi'ecting substantially a noiseless pressure imprint,

said means comprising a single momentum accumulator mounted to turn on afixed-pivot below the printing point and-in the path of each type bar tobe actuated thereby and having a contact member with which an en agingportion .on each type bar interme iate the ends thereof coacts, thestored ener y of the actuated momentum accumulator oing exerted on theactuated type bar at the last;

part of its printing stroke.

8. The combination of a platen, a series of pivoted type bars, keycontrolled means for actuatingeach type bar, and means forslowing downthe movement of each type bar as it approaches the printing point andefiecting substantially a noiseless pressure imprint, said meanscomprising asin le momentum ac- I cumulator pivoted interme iate itsends on a fixed portion of the machine below the printing point andhaving at its upper end a contact member with which a portion of eachtype bar intermediate its ends coacts as the actuated type barapproaches the printing sition, said momentum accumulator havmg aweighted portion at its lower. end.

9. The combination of a'platen, a series of pivoted type. bars, kecontrolled means for actuating each type er, and means'for side armspivoted intermediate then ends slowing down the movement of each. typebar as it approaches the printing pointand etfecting substantially-anoiseless pressure imprint, said means comprising a single momentumaccumulator having two united parallel to turn on a fixed support andhaving a contact pin between said arms-and with which each of the typebars coaets movement to printing position.

10. The combination of a platen, a series of pivoted typebars, keycontrolled'me'ans for actuating each type bar, and means for slowingdown the movement of each typebar as it approaches the printing pointand effecting substantially a noiseless pressure imprint, said meanscomprising a single momentum accumulator having two united parallel sidearms ivoted intermediate their ends to turn on a xed support and havinga contact pin between said arms, each type bar having a cam slot inwhich said contact pin is received as a type bar approaches the printingposition.

11. The combination of a series of pivoted type bars each having a camslot therein, and a single momentum accumulator in the path of all ofsaid type bars and actuated by each of them, said momentum accumulatorhaving an engaging portion received in the cam slot in anyof said typebars as it approaches the printing position, whereby the momentumaccumulator may be actuated by any type bar with a camming action andthe stored energy of the momentum accumulator will be exerted on theactuated type bar at the last part ofits printing stroke to effect asubstantially noiseless pressure imprint.

12. The combination of a series of pivoted type bars, a momentumaccumulator in the path of and actuated by each of said type bars andexerting its stored energy on each type bar to efiect substantially anoiseless pressure imprint, said momentum accumulator consisting of .asingle member pivoted below the rmting point and normally disconnectedirom the type bars, and means for bringing each type bar at the lastportion of its printing movement into interlocking working eng'a ementwith said momentum accumulator an the latter exerting its stored energyon the tygie bar near its type-carrying end thereo 13; The combinationof a platen, a series of tgpe bars that are provided with lateral ben swhere they converge at a single point below the print i cumulatorarranged in front of the platen and in the, path of said type bars andby which each type bar is applied with a substantially noiselesspressure imprint, means on each type bar intermediate the bend thereinand the free end thereof for engaging and actuating the momentumaccumulator and causing it to exert its stored energy on the engagedtype bar. a

M... The combination of a series of type bars that are provided withlateral bends where the converge at a single point below the print ine,a single momentum accumulator" arranged in front of the platen and inthe path of said type bars and by which each type bar is applied with asubstantially noiseless pressure imprint, and a slotted cam on each typebar intermediate the bend therein and the free end thereof forinterlockingand engaging and actuating the moment accumulator andcausing it to exert its;

ne, a single momentum acstored energy on the engaged type bar at thelast portion only of its printing stroke.

15. The combination of a series of type bars that are provided withlateral bends where they converge at a single point below the printline, a center guide for the type bars which coacts with each of themintermediate with said momentum accumulator,

the bend therein and the free end of the bar, a single momentumaccumulator pivoted on said type guide and arranged in the path of thetypebars to be actuated thereby, and means on each type bar intermediatethe bend therein and the free end of the bar for efi'ecting aninterlocking actuating engagement whereby the latter is effective at thelast portion'of the printing movement of each type bar to slow down itsmovement and cause the stored energy of the momentum accumulator to beexerted on the engaged type bar near the type-carrying end thereof andeffect substantially a noiseless pressure imprint.

16. The combination of a series of pivoted type bars each having aslotted cam therein,

cumulator is efiected and the stored energy of the latter is transmittedto the connected type bar, arresting means for limiting the returnmovement of the momentum accumulator to normal position ready to coactwith said slotted cam on each type bar,a spring for returning. saidmomentum accumulator to normal position, and adjustable means for varying the effective force of said spring. A

Signed at Stamford, in the county of Fairfield and State of Connecticut,this 18th day of January, A. D 1930.

GEORGE G; GOING.

key controlled means for actuating each type I an engaging pin carriedby.

tion between the actuatedtype bar and the momentum accumulator is eected and the stored energy of the latter is transmitted to Y theconnected type bar, arresting means for' limiting the return movement ofthe momentum accumulator to normal position ready to coact with saidslotted cam on each type ar,

and a spring for returning said momentum accumulator to normal position.

17. The combination of a platen, a series bars each having a slotted ycontrolled. means for acand means for slowof pivoted typie cam therein,e tuating each type bar, ing down the movement it approachesthe'printing point and effectin substantially a noiseless pressureimprint, said means comprisin a single momentum accumulator arranged inthe path of each .type bar to be actuated thereby, an-

engaging pin carried by said momentum accumulator and which is receivedin said cam slot in an actuated type bar as the latter approaches theprinting position, whereby said momentum accumulator may be set inmotion by a type bar with a camming action and an interlockingconnection between the actuated type bar and the momentum acof each typebar as

